Color photographic light-sensitive element

Abstract

A color photographic light-sensitive element comprising a support having thereon a silver halide emulsion layer containing therein a 3-anilino-5-pyrazolone magenta color-forming coupler represented by the following general formula (I): ##STR1## wherein R represents an aliphatic hydrocarbon group having up to about 35 carbon atoms, a heterocyclic group having up to about 22 carbon atoms or an aromatic group having up to about 22 carbon atoms; X represents a halogen atom or an alkoxy group having up to about 22 carbon atoms; Z represents a hydrogen atom or a coupling off group; and Y 1 , Y 2 , Y 3 , Y 4 and Y 5 , which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 5 carbon atoms, a trifluoromethyl group, an alkoxy group having 1 to 5 carbon atoms, an acylamino group having 1 to 30 carbon atoms, an alkylsulfonyl group having 2 to 30 carbon atoms or a sulfonamido group having 1 to 30 carbon atoms and the RS group is present at the 4- or 5-position of the anilino group. The magenta color-forming coupler prevents yellow staining at the unexposed area after color development processing particularly arising due to irradiation of light.

What is claimed is: 
     
       1. A color photographic light-sensitive element comprising a support having thereon a silver halide emulsion layer containing therein a 3-anilino-5-pyrazolone magenta color-forming coupler represented by the following general formula ##STR8## wherein R represents an aliphatic hydrocarbon group having up to about 35 carbon atoms, a heterocyclic group having up to 22 carbon atoms or an aromatic group having up to 22 carbon atoms; and Z represents a hydrogen atom or a group which is eliminated on coupling by the oxidation product of an aromatic primary amine developing agent; and the RS group is present at the 4- or 5-position of the anilino group. 
     
     
       2. The color photographic light-sensitive element as claimed in claim 1, wherein Z represents a hydrogen atom. 
     
     
       3. The color photographic light-sensitive element as claimed in claim 1, where Z represents a group which is eliminated on coupling by the oxidation product of an aromatic primary amine developing agent. 
     
     
       4. The color photographic light-sensitive element as claimed in claim 1, wherein R represents a straight chain or branched chain alkyl group having 1 to 22 carbon atoms, an aryl group having 6 to 22 carbon atoms or a heterocyclic group having 5 to 22 carbon atoms. 
     
     
       5. The color photographic light-sensitive element as claimed in claim 4, wherein Z represents a hydrogen atom, a thiocyano group, an acyloxy group, an aryloxy group, an alkoxy group, a halogen atom, an arylazo group, a benzotriazolyl group, a naphthotriazolyl group, an alkylthio group, an arylthio group, a heterocyclic thio group, an aralkoxycarbonyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, a cycloalkylthio group, a cycloalkoxy group, an imido group, an imidazolyl group, a triazolyl group, an acylamino group, a sulfonamido group or a cycloamino group. 
     
     
       6. The color photographic light-sensitive element as claimed in claim 1, wherein said magenta color-forming coupler represented by the general formula in claim 1 is selected from the group consisting of ##STR9## 
     
     
       7. The color photographic light-sensitive element as claimed in claim 1, wherein said silver halide emulsion layer is a green-sensitive silver halide emulsion layer. 
     
     
       8. The color photographic light-sensitive element as claimed in claim 1, wherein said silver halide emulsion layer is a green-sensitive silver halide emulsion layer containing said magenta color-forming coupler represented by the general formula as set forth in claim 1, and said color photographic light-sensitive element further includes a red-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer. 
     
     
       9. The color photographic light-sensitive element as claimed in claim 1, wherein said silver halide emulsion layer is a green-sensitive silver halide emulsion layer containing said magenta color-forming coupler represented by the general formula as set forth in claim 1, and said color photographic light-sensitive element additionally includes a red-sensitive silver halide emulsion layer containing a phenolic or naphtholic cyan color-forming coupler, and a blue-sensitive silver halide emulsion layer containing a benzoylacetanilide or pivaloylacetanilide yellow color-forming coupler. 
     
     
       10. The color photographic light-sensitive element as claimed in claim 1, wherein said silver halide emulsion layer contains a p-substituted phenol derivative. 
     
     
       11. The color photographic light-sensitive element as claimed in claim 10, wherein said p-substituted phenol derivative is a hydroquinone derivative, a gallic acid derivative, a p-alkoxyphenol, a chroman derivative, a spirochroman derivative, a tocopherol derivative, 2,2'-methylene bisphenol derivative, or a p-alkylphenol derivative.